One vertex per element, one color per generator, with an edge from x to x·s.
(10,12)(14,16)(17,18)(19,25)(20,21)(22,26)(23,29)(24,30)(27,31)(28,32) involution — undirected(1,2)(3,8)(4,6)(5,7)(11,15)(14,16)(17,19)(18,23)(20,27)(21,28)(22,29)(24,31)(25,26)(30,32) involution — undirected(1,3,5,6)(2,4,7,8)(9,10,13,12)(11,14,15,16)(1,2)(3,4)(5,7)(6,8)(9,11)(10,14)(12,16)(13,15)(17,20,22,30)(18,24,26,21)(19,27,29,32)(23,31,25,28)(1,2)(3,4)(5,7)(6,8)(9,12,13,10)(11,16,15,14)(17,19)(18,25)(20,27)(21,31)(22,29)(23,26)(24,28)(30,32)(1,4)(2,6)(3,7)(5,8)(17,21,22,24)(18,20,26,30)(19,28,29,31)(23,27,25,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.